Colter-clasp



(No Model.)

P. E. DAVIS.

OOLTER GLASP.

No. 528,926. Patented Nov. 13, 18 94.

M A 0. M I M i=2 i 4 w r 2 .55 E I 1, .7

UNITED STATES PATENT OFFICE.

FRANK E. DAVIS, OF LA GROSSE, WISCONSIN.

COLTER-CLASP.

SPECIFICATION forming part of Letters Patent N0. 528,926, dated November13, 1894.

Application filed September 7, 1893- Serial No. 485,042- (No model.)

To all whom it may concern.-

Be it known that I, FRANK E. DAVIS, a citizen of the United States,residing at La Crosse, in the county of La Crosse and State ofWisconsin, have invented certain new and useful Improvements inOolter-Olasps; and I do declare the following to be a full, clear, andexact-description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the figures of referencemarked thereon, which form a part of this specification.

This invention relates to an improved form of clasp for attaching acolter to the beam of a plow, whether an ordinary beam plow, singlesulky, or gang plow, and whatever may be the form or material of thebeam.

The object of the invention is to enable the colter shank to be set atany desired angle to the beam with the shank of the colter fork in frontor rear of the pivotal point, and to so construct the clasp as to obtainthese results with ease and efficiency, and with the simplicity anddurability of parts.

The invention is illustrated in the accompanying drawings, in whichFigure 1 is a plan view of my improved colter clasp; Fig. 2, a plan ofthe bed plate of the clasp; and Fig. 3 a side view of the clasp asapplied to the plow beam and showing different positions of the shank ofthe colter fork.

The clasp consists of a plate 1, adapted to be retained upon one side ofa plow beam by means of bolts 2, one above and the other below the beam3, passing through the opposite extremities of the plate 1, and througha corresponding plate or strap 4 upon the opposite side of the beam. Theplate 1 has a central circular boss or projection 5 in the center ofwhich is mounted the bolt or pin 6 forming the pivot upon which thesocket plate 7 of the clasp turns. The socket plate consists of acircular part upon one side of which is formed the socket 8 throughwhich passes the shank of the colter fork 9 and in which the latter issecured at any desired height by means of a set screw 10. The bed plate1, of the clasp has surrounding the central boss 5 an annular series ofradial teeth or corrugations 11, and the circular. part of the socketplate has a counter-sink corresponding to said boss and a similar seriesof teeth or corrugations adapted to fit between those of the bed plateto prevent the turning of the former upon the latter. The plates areclamped together in any desired position by means of a nut upon theextremity of the pivot 6. The bed plate bein g attached to the plow beamthe socket plate may be turned to any desired angle thereto, and thenumber of angular positions and consequently the delicacy of adjustmentis limited only by the number of radial corrugations.

The socket, as stated, is located upon one edge of the adjustable plate,and by so turning the latter that the socket lies either in front orrear of the pivotal point, the longitudinal position of the colter withreference to the beam may be materially altered. The bolts holding theclasp upon the beam may be of considerable length and threaded thegreater part of their length, to adapt the clasp to fit either wood ormetal beams.

I claim as my invention- 1. In a colter clasp, the combination with abed plate and means for securing the same to the beam of a plow andhaving radial teeth or corrugations, of a socket plate havingcorresponding radial teeth or corrugations, a clamping bolt on which thesocket plate may be turned as a pivot and having tightening means forclamping the socket plate in its desired position and the socket platehaving its socket eccentric to its axis, substantially as described.

2. In a colter clasp, the combination with a bed plate and means forsecuring it to a plow beam, said bed plate having a boss or projectionprovided with radial teeth or corruga tions circularly arranged, of asocket plate having corresponding radial teeth or corrugations, a bolthaving means for clamping said plates together and upon which bolt thesocket plate may turn as a pivot, said socket plate having its socketeccentric to its pivotal axis and provided with adjustable means forengaging the shank of a colter, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK E. DAVIS.

Witnesses: v

SARA L. Fox, F. W. SEAGER.

Too

